AFT EQUIP CTR RACK
APU Battery Schematic
Figure 3 (Sheet 1)
A
757
MAINTENANCE MANUAL
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24-31-00
STANDBY POWER ú ú 03 Page 10 ú Jan 28/02
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H12738
AFT EQUIPMENT CENTER RACK
APU Battery Schematic
Figure 3 (Sheet 2)
A
757
MAINTENANCE MANUAL
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EXTENDED ú
24-31-00
STANDBY POWER ú ú 01 Page 11 ú Jan 28/02
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H12744
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757
MAINTENANCE MANUAL
(e)
AIRPLANES WITH 30-MINUTE STANDBY POWER; When starting the APU, the APU start relay energizes, energizing the ABCIR. The battery charger is disconnected from the ground service bus. The battery is not charging.
(f)
If battery temperature exceeds 150°F (65°C), a thermal switch in the battery closes. The switch energizes the ABCIR, removing charger input power. The switch will re-open when battery temperature drops below 135°F (57°C).
(g)
EICAS computers monitor APU battery voltage and charging current.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-31-00
ALL ú ú 01 Page 12 ú Jan 28/02
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A
757
FAULT ISOLATION/MAINT MANUAL
BATTERIES
* SEE THE WDM EQUIPMENT LIST
AIRPLANES WITH EXTENDED STANDBY POWER
Batteries - Component Index
Figure 101 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú 03 Page 101 ú Sep 28/01
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M22024
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757
FAULT ISOLATION/MAINT MANUAL
* SEE THE WDM EQUIPMENT LIST
Batteries - Component Index
Figure 101 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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M22017
A
757 FAULT ISOLATION/MAINT MANUAL
FORWARD EQUIPMENT CENTER
(RIGHT SIDE)
P34 PANEL
SEE A
P37 PANEL FORWARD EQUIPMENT CENTER ACCESS,
MAIN113AL
BATTERY, M223
FORWARD
EQUIPMENT
CENTER
MAIN(LEFT SIDE) BATTERY
SEE B SHUNT,
M224 MAIN EQUIPMENT CENTER ACCESS, 119AL
STATIC
INVERTER
(REF)
MAIN BATTERY
BATTERY CURRENT
CHARGER, MONITOR,
M218
M10212 FWD
FORWARD EQUIPMENT CENTER (RIGHT SIDE)
A
YFMM-24-31-0002
FWD
FORWARD EQUIPMENT CENTER (LEFT SIDE)
B
Batteries - Component Location
Figure 102 (Sheet 1)
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ALL ú ú 02 Page 103 ú Dec 20/90
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757 FAULT ISOLATION/MAINT MANUAL
AFT EQUIPMENT CENTER RACK, E6
APU BATTERY SHUNT, M10251, IS AT ONE OF THESE LOCATIONS
Batteries - Component Location
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